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Media Type
1,445
texts
2
movies
Topics & Subjects
1,410
MARS (PLANET)
1,224
NASA Technical Reports Server (NTRS)
483
MARS SURFACE
203
MARS ATMOSPHERE
168
PLANETARY GEOLOGY
153
SPACE EXPLORATION
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Collection
1,224
NASA Network Resource and Training Site
186
NASA Technical Documents
15
Project Gutenberg
10
American Libraries
9
California Digital Library
8
Canadian Libraries
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Creator
1,224
nasa technical reports server (ntrs)
22
non
6
burroughs, edgar rice, 1875-1950
6
lowell, percival, 1855-1916
2
brown, fredric, 1906-1972
2
flammarion, camille, 1842-1925
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Language
1,444
English
2
French
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